Disappointed Customer of payflex.

I paid at bounce using payflex and the repayment installments were R126.66 each month and also purchased at another store using the same method and the installment was R193 and they debit on the 25th of each month. I made a payment of R126.66 at 21:29 and the other payment of R193.00 at 21:44, to my shock they don't see the R126.66 payment as it indicated an exclamation on the app. The reason why I made a payment was that is was already late and they haven't debited so I wanted to avoid penalties. I've used all the methods that you can think of in order to get hold of payflex but no response, the chatbox and whatsapp say you must send an email at support@payflex but no response as I sent more emails before they can even add penalties, none of my calls were answered meaning I cannot get hold of them. I called my bank and they said the money was deducted from my account and now payflex have increased the penalty and I can't get hold of them. They keep attempting to deduct with no success what should I do as I can't get hold of them???? This is not fair at all meanwhile this could have been avoided if they prioritize their customers.

Disappointed customer.